The PON can be split anywhere along the line. The headend OLT can be close but often is far, usually a cabinet feeding multiple blocks, sometimes a pile of them in a shed that feeds a whole town or small city. At the OLT location there will be UPS and usually feed redundancy.
On Fri, Mar 15, 2024, 6:58 p.m. Ken Hohhof <khoh...@kwom.com> wrote: > Since there are FTTH people here and I’m mostly ignorant of such things, > maybe someone can clear something up for me. > > > > I always assumed a PON based FTTH system had a topology kind of like HFC. > I expected fiber down the street with splitters, but fed by some sort of > neighborhood node in a cabinet with power and electronics, fed by active > EPL style fiber. Which could have redundant paths, rings, etc. so a fiber > cut wouldn’t take down a whole town or multiple towns, the backbone traffic > would reroute. > > > > I’ve been told this is not the case. And that instead, each PON could go > back over a strand to a headend several towns and many miles away, all > passive. > > > > Sorry for the poor description of my question, hopefully you can figure > out what I’m asking. > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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